linux-kernel - [PATCH 3/9] drm: meson: drv: use macro when initializing vpu

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Date:   Mon, 24 Jun 2019 16:48:27 +0200
From:   Julien Masson <jmasson@...libre.com>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Julien Masson <jmasson@...libre.com>
Subject: [PATCH 3/9] drm: meson: drv: use macro when initializing vpu

This patch add new macro which is used to set WRARB/RDARB mode of
the VPU.

Signed-off-by: Julien Masson <jmasson@...libre.com>
---
 drivers/gpu/drm/meson/meson_drv.c       | 26 +++++++++++++++++++++----
 drivers/gpu/drm/meson/meson_registers.h |  1 +
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index 2310c96fff46..50096697adc3 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -149,10 +149,28 @@ static struct regmap_config meson_regmap_config = {
 
 static void meson_vpu_init(struct meson_drm *priv)
 {
-	writel_relaxed(0x210000, priv->io_base + _REG(VPU_RDARB_MODE_L1C1));
-	writel_relaxed(0x10000, priv->io_base + _REG(VPU_RDARB_MODE_L1C2));
-	writel_relaxed(0x900000, priv->io_base + _REG(VPU_RDARB_MODE_L2C1));
-	writel_relaxed(0x20000, priv->io_base + _REG(VPU_WRARB_MODE_L2C1));
+	u32 value;
+
+	/*
+	 * Slave dc0 and dc5 connected to master port 1.
+	 * By default other slaves are connected to master port 0.
+	 */
+	value = VPU_RDARB_SLAVE_TO_MASTER_PORT(0, 1) |
+		VPU_RDARB_SLAVE_TO_MASTER_PORT(5, 1);
+	writel_relaxed(value, priv->io_base + _REG(VPU_RDARB_MODE_L1C1));
+
+	/* Slave dc0 connected to master port 1 */
+	value = VPU_RDARB_SLAVE_TO_MASTER_PORT(0, 1);
+	writel_relaxed(value, priv->io_base + _REG(VPU_RDARB_MODE_L1C2));
+
+	/* Slave dc4 and dc7 connected to master port 1 */
+	value = VPU_RDARB_SLAVE_TO_MASTER_PORT(4, 1) |
+		VPU_RDARB_SLAVE_TO_MASTER_PORT(7, 1);
+	writel_relaxed(value, priv->io_base + _REG(VPU_RDARB_MODE_L2C1));
+
+	/* Slave dc1 connected to master port 1 */
+	value = VPU_RDARB_SLAVE_TO_MASTER_PORT(1, 1);
+	writel_relaxed(value, priv->io_base + _REG(VPU_WRARB_MODE_L2C1));
 }
 
 static void meson_remove_framebuffers(void)
diff --git a/drivers/gpu/drm/meson/meson_registers.h b/drivers/gpu/drm/meson/meson_registers.h
index 55f5fe21ff5e..a9db49e5bdd6 100644
--- a/drivers/gpu/drm/meson/meson_registers.h
+++ b/drivers/gpu/drm/meson/meson_registers.h
@@ -1496,6 +1496,7 @@
 #define VPU_RDARB_MODE_L1C2 0x2799
 #define VPU_RDARB_MODE_L2C1 0x279d
 #define VPU_WRARB_MODE_L2C1 0x27a2
+#define		VPU_RDARB_SLAVE_TO_MASTER_PORT(dc, port) (port << (16 + dc))
 
 /* osd super scale */
 #define OSDSR_HV_SIZEIN 0x3130
-- 
2.17.1